Todd Kohlhepp is escorted into a Spartanburg County magistrate courtroom in Spartanburg, S.C.AP

A suspected South Carolina serial killer left a series of ghoulish product reviews on Amazon in which he gives rave ratings to items that might come in handy during a murder, according to reports.

Todd Kohlhepp, 45, who allegedly murdered up to seven people, wrote the disturbing reviews while shopping for potential weapons, NBC News reported.

“Haven’t stabbed anyone yet,” he allegedly wrote about a knife being sold on the site. “When I do it will be with a quality tool like this.”

In another posting under the pseudonym “me,” Kohlhepp kvells about Master brand padlocks.

“Solid locks,” the review states. “Have 5 on a shipping container.. wont stop them.. but sure will slow them down til they are too old to care.”

Kohlhepp was arrested last Thursday after police searched his property for a missing woman and found her alive – but chained like a dog to a metal storage container. Her slain boyfriend was later discovered in a shallow grave nearby.

And an account linked to Kohlhepp left a review for a shovel with a folding handle: “Keep in car for when you have to hide the bodies and you left the full size shovel at home,” it read.

Kohlhepp — a registered sex offender — has confessed to killing four people whose corpses were found in 2003, police said. The unidentified remains of two more people were also unearthed on his property in Woodruff, SC.

Authorities have not been able to confirm that Kohlhepp wrote the Amazon reviews, but many of them appeared in a wish list in his personal account, and showed similarities to his alleged activities, the Huffington Post reported.

The reviews — both old and new — contained references to a “tactical pouch” and “shoulder pouch,” both of which are used to carry ammunition, the site reported.